Strong coupling of a quantum dot molecule to a photonic crystal cavity
Strong coupling of a quantum dot molecule to a photonic crystal cavity
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DOI：
10.1103/physrevb.99.165420
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发表时间：
2019-04-15
影响因子：
3.7
通讯作者：
Gammon, Daniel
中科院分区：
文献类型：
--
作者：
Vora, Patrick M.;Bracker, Allan S.;Gammon, Daniel
量子点分子（QDM）具有可广泛调节的激子跃迁能量和跃迁强度，其可以通过施加的电场来控制。我们利用这些性质来演示嵌入在光子晶体腔中的量子点分子的真空拉比分裂的原位调谐。各向异性交换偶极子的两个分量都具有平行于腔的分量并且强耦合。这产生了两个QDM腔极化激元的性质占主导地位的腔和第三个混合自旋的混合态，很少的腔组件和不寻常的偏振。
Quantum dot molecules (QDMs) have widely tunable exciton transition energies and transition strengths that can be controlled with an applied electric field. We use these properties to demonstrate in situ tuning of the vacuum Rabi splitting for a quantum dot molecule embedded in a photonic crystal cavity. Both components of the anisotropic exchange doublet have a component parallel to the cavity and are strongly coupled. This produces two QDM-cavity polaritons with properties dominated by the cavity and a third mixed-spin hybrid state with little cavity component and unusual polarization.